Automatic means for lubricating pumps.



W. VO'LKER.

AUTOMATIC MEANS FOR LUBRIOATING PUMPS.

APPLICATION FILED MAY 1, 1911 RENEWED NOV,2B, 1913.

1 84,769. Patented Jan. 20, 1914.

N UFFICE.

WEN'DELIN VfiLKER, 0F WIESBADEN-SONNENBERG, GERMANY.

AUTOMATIC MEANS FOR LUBRICATING PUMPS.

Specification of Letters Patent.

Patented Jan. 20, 1914..

Application filed May 1, 1911, Serial No. 624,398. Renewed November 28, 1913. Serial No. 803,602.

- 1/ 0 all whom it may concern:

Be it known that I, WENDELIN ViiLKER, a subject of the German Emperor, and resident of lViesbaden-Sonnenberg, Germany, have invented certain new and useful Improvements in Automatic Means for Lubricating Pumps, of which the following is a specification.

In order to be able to employ economically frigorific'machines itlSO,'lI1 smaller industries such as for instance in butcheries, manufactories of sausage, wine cellars, dairying farms, hospitals, sanatoriums, hotels, restaurants, coffee houses, confectioners shops and so on and to introduce them into these branches, the compressors of the frigorific machines must preferably be simplifiedin such a manner that a small consumption of force and a simple manipulation are obtained.

In the actually employed compressors for frigorific machines in which the cold is produced by the aid of ammonia, carbonic acid, sulfurous acid or a similar carrier for cold, the piston rod offers a drawback in that owing to its alternating motion the cold carrier constantly escapes to the outside and evaporates. Besides the precipitate thus formed is gradually introduced into the machine. It follows from all this that the machine does not remain at the height of its output and that the cold carrier must be replaced rather often. Besides the piston rod wears out more in its middle part than at the ends whereby the tightness of the stuffing box is diflicult to ascertain which is only possible by strongly tightening the packing sleeve of the stuffing box. This tightening causes a certain braking action which in small compressors absorbs arelatively high percentage of the motive power. It is for this reason advantageous to inclose the crank shaft of the compressors of smaller .frigorific.

machines in a closed casing which at the same time may be employed as the suction chamher. This arrangement allows of the piston rod proper, as well as the-cross head and the cross head guides being dispensed with as the piston may be directly connected with the crank shaft by-means of the connecting rod. The crank shaft requires tightening only on one side and only performs a rotary motionin the tightening means so that nearly no leak can occur. Besides this kind of packing only absorbs a small amount of force. As readily seen this arrangement does away with all the drawbacks cited above. Besides quite an important simplification of the working is obtained by the fact, that a single charge of oil allows of all movable parts of the compressor being lubricated in a continuous and automatic manner during the space of months.

The present invention is based on the particulars cited above.

The accompanying drawing, given by way bore opening out at f on the crank pin. A

part of the oil escaping from this crank pin falls on the bottom of the crank casing or carter g and from there is transmitted by the lubricatin rings h to the bearings 11 of the crank sha t. Another part of said oil is whirled around by the rotation of the crank and mixed with the gas entering through the suction passage is, lubricates the piston pin Z, the suction valve m and the cylinder walls n. The oil mixed with compressed gas passes through the delivery valve 0 and the pipe 7) into the oil separator a formed of a corresponding number of pipes 9. On the -walls of this separator the oil is separated from the compressed gas and collects, because it is heavier than the gas in the lower part of the oil collector a in readiness to begin again the cycle. An oil filter may also be mounted into the oil collector. The compressed gas escapes through the tubular extension 8 branched on the oil collector and is conveyed for the purpose of its liquefaction into a condenser and from here into a vaporizer where it yields its cold. The carrier finally enters again in a gaseous form the crank casing 9 through the suction tube k and again begins the already described 0 cle.

Having now fully described my said invention, what I claim and desire to secure by Letters Patent, is:

In combination, a cylinder, acrank case communicating therewith, a crank shaft mounted in the crank case, said crank shaft having an oil duct, 3. piston in the cylinder,

' oseyee the gas outlet and comprising a plate and a plurality of depending tubes, a pipe communicating With the in the crank shaft, and a regulating valve in the said pipe. V

In testimony whereof Ihave hereunto set my hand inpresence of two Witnesses.

VVENDELIN VGLKER;

Witnesses ANTON VON LOUIS MAY.

SoHoM,

oil outlet and the duct 15 who 

